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try to speedup canvas filters

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Jindra Petřík
2014-09-28 09:48:59 +02:00
parent afe339c8fe
commit 01fa2bd5e2
1 changed files with 24 additions and 39 deletions
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63
libsrc/ffdec_lib/src/com/jpexs/helpers/resource/canvas.js
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@@ -53,7 +53,7 @@ Filters._unpremultiply = function(data) {
};
Filters._boxBlurHorizontal = function(pixels, mask, w, h, radius) {
Filters._boxBlurHorizontal = function(pixels, mask, w, h, radius, maskType) {
var index = 0;
var newColors = [];
@@ -66,7 +66,7 @@ Filters._boxBlurHorizontal = function(pixels, mask, w, h, radius) {
for (var x = -radius * 4; x < w * 4; x += 4) {
var oldPixel = x - radius * 4 - 4;
if (oldPixel >= 0) {
if ((mask == null) || (mask[index + oldPixel + 3] > 0)) {
if ((maskType == 0) || (maskType == 1 && mask[index + oldPixel + 3] > 0) || (maskType == 2 && mask[index + oldPixel + 3] < 255)) {
a -= pixels[index + oldPixel + 3];
r -= pixels[index + oldPixel];
g -= pixels[index + oldPixel + 1];
@@ -77,7 +77,7 @@ Filters._boxBlurHorizontal = function(pixels, mask, w, h, radius) {
var newPixel = x + radius * 4;
if (newPixel < w * 4) {
if ((mask == null) || (mask[index + newPixel + 3] > 0)) {
if ((maskType == 0) || (maskType == 1 && mask[index + newPixel + 3] > 0) || (maskType == 2 && mask[index + newPixel + 3] < 255)) {
a += pixels[index + newPixel + 3];
r += pixels[index + newPixel];
g += pixels[index + newPixel + 1];
@@ -87,7 +87,7 @@ Filters._boxBlurHorizontal = function(pixels, mask, w, h, radius) {
}
if (x >= 0) {
if ((mask == null) || (mask[index + x + 3] > 0)) {
if ((maskType == 0) || (maskType == 1 && mask[index + x + 3] > 0) || (maskType == 2 && mask[index + x + 3] < 255)) {
if (hits == 0) {
newColors[x] = 0;
newColors[x + 1] = 0;
@@ -119,7 +119,7 @@ Filters._boxBlurHorizontal = function(pixels, mask, w, h, radius) {
}
};
Filters._boxBlurVertical = function(pixels, mask, w, h, radius) {
Filters._boxBlurVertical = function(pixels, mask, w, h, radius, maskType) {
var newColors = [];
var oldPixelOffset = -(radius + 1) * w * 4;
var newPixelOffset = (radius) * w * 4;
@@ -134,7 +134,7 @@ Filters._boxBlurVertical = function(pixels, mask, w, h, radius) {
for (var y = -radius; y < h; y++) {
var oldPixel = y - radius - 1;
if (oldPixel >= 0) {
if ((mask == null) || (mask[index + oldPixelOffset + 3] > 0)) {
if ((maskType == 0) || (maskType == 1 && mask[index + oldPixelOffset + 3] > 0) || (maskType == 2 && mask[index + oldPixelOffset + 3] < 255)) {
a -= pixels[index + oldPixelOffset + 3];
r -= pixels[index + oldPixelOffset];
g -= pixels[index + oldPixelOffset + 1];
@@ -146,7 +146,7 @@ Filters._boxBlurVertical = function(pixels, mask, w, h, radius) {
var newPixel = y + radius;
if (newPixel < h) {
if ((mask == null) || (mask[index + newPixelOffset + 3] > 0)) {
if ((maskType == 0) || (maskType == 1 && mask[index + newPixelOffset + 3] > 0) || (maskType == 2 && mask[index + newPixelOffset + 3] < 255)) {
a += pixels[index + newPixelOffset + 3];
r += pixels[index + newPixelOffset];
g += pixels[index + newPixelOffset + 1];
@@ -156,7 +156,7 @@ Filters._boxBlurVertical = function(pixels, mask, w, h, radius) {
}
if (y >= 0) {
if ((mask == null) || (mask[y * w * 4 + x + 3] > 0)) {
if ((maskType == 0) || (maskType == 1 && mask[y * w * 4 + x + 3] > 0) || (maskType == 2 && mask[y * w * 4 + x + 3] < 255)) {
if (hits == 0) {
newColors[4 * y] = 0;
newColors[4 * y + 1] = 0;
@@ -189,13 +189,13 @@ Filters._boxBlurVertical = function(pixels, mask, w, h, radius) {
};
Filters.blur = function(canvas, ctx, hRadius, vRadius, iterations, mask) {
Filters.blur = function(canvas, ctx, hRadius, vRadius, iterations, mask, maskType) {
var imgData = ctx.getImageData(0, 0, canvas.width, canvas.height);
var data = imgData.data;
Filters._premultiply(data);
for (var i = 0; i < iterations; i++) {
Filters._boxBlurHorizontal(data, mask, canvas.width, canvas.height, Math.floor(hRadius / 2));
Filters._boxBlurVertical(data, mask, canvas.width, canvas.height, Math.floor(vRadius / 2));
Filters._boxBlurHorizontal(data, mask, canvas.width, canvas.height, Math.floor(hRadius / 2),maskType);
Filters._boxBlurVertical(data, mask, canvas.width, canvas.height, Math.floor(vRadius / 2),maskType);
}
Filters._unpremultiply(data);
@@ -259,14 +259,7 @@ Filters.gradientGlow = function(srcCanvas, src, blurX, blurY, angle, distance, c
var angleRad = angle / 180 * Math.PI;
var moveX = (distance * Math.cos(angleRad));
var moveY = (distance * Math.sin(angleRad));
var srcPixels = src.getImageData(0, 0, width, height).data;
var revPixels = [];
for (var i = 0; i < srcPixels.length; i += 4) {
revPixels[i] = srcPixels[i];
revPixels[i + 1] = srcPixels[i + 1];
revPixels[i + 2] = srcPixels[i + 2];
revPixels[i + 3] = 255 - srcPixels[i + 3];
}
var srcPixels = src.getImageData(0, 0, width, height).data;
var shadow = [];
for (var i = 0; i < srcPixels.length; i += 4) {
var alpha = srcPixels[i + 3];
@@ -280,22 +273,22 @@ Filters.gradientGlow = function(srcCanvas, src, blurX, blurY, angle, distance, c
Filters._setRGB(retImg, 0, 0, width, height, shadow);
var mask = null;
var maskType = 0;
if (type == Filters.INNER) {
mask = srcPixels;
maskType = 1;
}
if (type == Filters.OUTER) {
mask = revPixels;
maskType = 2;
}
retCanvas = Filters.blur(retCanvas, retCanvas.getContext("2d"), blurX, blurY, iterations, mask);
retCanvas = Filters.blur(retCanvas, retCanvas.getContext("2d"), blurX, blurY, iterations, srcPixels, maskType);
retImg = retCanvas.getContext("2d");
shadow = retImg.getImageData(0, 0, width, height).data;
if (mask != null) {
for (var i = 0; i < mask.length; i += 4) {
if (mask[i + 3] == 0) {
if (maskType != 0) {
for (var i = 0; i < srcPixels.length; i += 4) {
if ((maskType == 1 && srcPixels[i + 3] == 0)||(maskType == 2 && srcPixels[i+3]==255)) {
shadow[i] = 0;
shadow[i + 1] = 0;
shadow[i + 2] = 0;
@@ -358,7 +351,7 @@ Filters.dropShadow = function(canvas, src, blurX, blurY, angle, distance, color,
var retCanvas = createCanvas(canvas.width, canvas.height);
Filters._setRGB(retCanvas.getContext("2d"), 0, 0, width, height, shadow);
if (blurX > 0 || blurY > 0) {
retCanvas = Filters.blur(retCanvas, retCanvas.getContext("2d"), blurX, blurY, iterations, null);
retCanvas = Filters.blur(retCanvas, retCanvas.getContext("2d"), blurX, blurY, iterations, null,0);
}
shadow = retCanvas.getContext("2d").getImageData(0, 0, width, height).data;
@@ -395,14 +388,6 @@ Filters.gradientBevel = function(canvas, src, colors, ratios, blurX, blurY, stre
var retImg = createCanvas(width, height);
var srcPixels = src.getImageData(0, 0, width, height).data;
var revPixels = [];
for (var i = 0; i < srcPixels.length; i += 4) {
revPixels[i] = srcPixels[i];
revPixels[i + 1] = srcPixels[i + 1];
revPixels[i + 2] = srcPixels[i + 2];
revPixels[i + 3] = 255 - srcPixels[i + 3];
}
var gradient = createCanvas(512, 1);
var gg = gradient.getContext("2d");
@@ -476,12 +461,12 @@ Filters.gradientBevel = function(canvas, src, colors, ratios, blurX, blurY, stre
break;
}
var mask = null;
var maskType = 0;
if (type == Filters.INNER) {
mask = srcPixels;
maskType = 1;
}
if (type == Filters.OUTER) {
mask = revPixels;
maskType = 2;
}
var retc = retImg.getContext("2d");
@@ -490,7 +475,7 @@ Filters.gradientBevel = function(canvas, src, colors, ratios, blurX, blurY, stre
retc.drawImage(shadowIm, 0, 0);
retc.drawImage(hilightIm, 0, 0);
retImg = Filters.blur(retImg, retImg.getContext("2d"), blurX, blurY, iterations, mask);
retImg = Filters.blur(retImg, retImg.getContext("2d"), blurX, blurY, iterations, srcPixels,maskType);
var ret = retImg.getContext("2d").getImageData(0, 0, width, height).data;
for (var i = 0; i < srcPixels.length; i += 4) {